Research on signal processing of segment-grout defect in tunnel based on impact-echo method

•The segment-grout structure with defects was simulated experimentally.•STFT and WT were carried out to analyze the signals.•Energies of wavelet packet were calculated. In shield tunneling construction, grout of precast concrete segments is widely applied to various geological conditions. However, t...

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Veröffentlicht in:	Construction & building materials 2018-10, Vol.187, p.280-289
Hauptverfasser:	Yao, Fei, Chen, Guangyu, Abula, Abulikemu
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Defects Energy Grout Impact-echo Mechanical properties Nondestructive testing Signal processing STFT Tunnel construction
Online-Zugang:	Volltext
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